public void KeyVault_Aes128CbcOneBlock_ExcessKeyMaterial()
{
// Arrange.
// Note that AES128CBC as implemented in this library uses PKCS7 padding mode where the test
// vectors do not use padding.
byte[] CEK = { 0x06, 0xa9, 0x21, 0x40, 0x36, 0xb8, 0xa1, 0x5b, 0x51, 0x2e, 0x03, 0xd5, 0x34, 0x12, 0x00, 0x06, 0xc2, 0x86, 0x69, 0x6d, 0x88, 0x7c, 0x9a, 0xa0, 0x61, 0x1b, 0xbb, 0x3e, 0x20, 0x25, 0xa4, 0x5a };
byte[] PLAIN = System.Text.UTF8Encoding.UTF8.GetBytes("Single block msg");
byte[] IV = { 0x3d, 0xaf, 0xba, 0x42, 0x9d, 0x9e, 0xb4, 0x30, 0xb4, 0x22, 0xda, 0x80, 0x2c, 0x9f, 0xac, 0x41 };
byte[] ED = { 0xe3, 0x53, 0x77, 0x9c, 0x10, 0x79, 0xae, 0xb8, 0x27, 0x08, 0x94, 0x2d, 0xbe, 0x77, 0x18, 0x1a };
Aes128Cbc algo = new Aes128Cbc();
byte[] encrypted;
using (var encryptor = algo.CreateEncryptor(CEK, IV, null))
{
encrypted = encryptor.TransformFinalBlock(PLAIN, 0, PLAIN.Length);
// Assert: we only compare the first 16 bytes as this library uses PKCS7 padding
var unpadded = encrypted.Take(16).ToArray();
Assert.True(unpadded.SequenceEqual(ED));
}
using (var decryptor = algo.CreateDecryptor(CEK, IV, null))
{
var decrypted = decryptor.TransformFinalBlock(encrypted, 0, encrypted.Length);
// Assert
Assert.True(decrypted.SequenceEqual(PLAIN));
}
}
public void KeyVault_Aes128CbcTwoBlock()
{
// Arrange.
// Note that AES128CBC as implemented in this library uses PKCS7 padding mode where the test
// vectors do not use padding.
byte[] CEK = { 0xc2, 0x86, 0x69, 0x6d, 0x88, 0x7c, 0x9a, 0xa0, 0x61, 0x1b, 0xbb, 0x3e, 0x20, 0x25, 0xa4, 0x5a };
byte[] PLAIN = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f };
byte[] IV = { 0x56, 0x2e, 0x17, 0x99, 0x6d, 0x09, 0x3d, 0x28, 0xdd, 0xb3, 0xba, 0x69, 0x5a, 0x2e, 0x6f, 0x58 };
byte[] ED = { 0xd2, 0x96, 0xcd, 0x94, 0xc2, 0xcc, 0xcf, 0x8a, 0x3a, 0x86, 0x30, 0x28, 0xb5, 0xe1, 0xdc, 0x0a, 0x75, 0x86, 0x60, 0x2d, 0x25, 0x3c, 0xff, 0xf9, 0x1b, 0x82, 0x66, 0xbe, 0xa6, 0xd6, 0x1a, 0xb1 };
Aes128Cbc algo = new Aes128Cbc();
byte[] encrypted;
using (var encryptor = algo.CreateEncryptor(CEK, IV, null))
{
encrypted = encryptor.TransformFinalBlock(PLAIN, 0, PLAIN.Length);
// Assert: we only compare the first 32 bytes as this library uses PKCS7 padding
var unpadded = encrypted.Take(32).ToArray();
Assert.True(unpadded.SequenceEqual(ED));
}
using (var decryptor = algo.CreateDecryptor(CEK, IV, null))
{
var decrypted = decryptor.TransformFinalBlock(encrypted, 0, encrypted.Length);
// Assert
Assert.True(decrypted.SequenceEqual(PLAIN));
}
}
